Kern IP777 Tube Rolling

If anyone who has tried a few different tubes in the Kern liked the results, I'd love to her about it. My Kern is on the glassy/clean side, depending on what power amp I use. I'd like to get a little bit more warmth out of it.

I found that NOS Sylvanias really warm that thing up. This is a subtle thing as it is so warm as it is. The more modern tubes that were in it were sounding brittle and nonresponsive.
The Sylvanias give a big fat low end and smooth treble even outside.

Hey folks, thanks for the replies. Tom, I checked-out your old thread and found some good stuff there.

It's been so long, I couldn't remember what tubes were in the thing, so I thought I'd check. Today, I was trying to take off the tube cages (I can't remember what you call them), but was having some real problems. Any suggestions on how to get the tubes out without destroying them? In any event, despite my poor old eyes and the bad light, I could see that one of the 12AX7's was a russian tube. A Sovtek, no doubt.

I couldn't get the others out and didn't want to risk damaging the thing. So those'll have to wait.

Also, I haven't purchased tubes in some time and was hopeful someone could point me in the direction of a good place to buy tubes, without spending a fortune.

You didn't own a Fender amp back in the day. Push in on the sleeve and turn. Remove. Grip the tube with a soft cloth and pull only work a little to the left or right to get going. When replacing sleeve small end of spring faces tube.

Thanks, Chadds. I did push in on the sleeve and turned, etc. Only one sleeve would come off. I'm not certain why the sleeves are getting hung-up. Since I've had the pre, which has been a while, I've never changed the tubes.

Hmmm? Am I missing something? In the interim, I will proceed with caution.

Thanks, Chadds. I did push in on the sleeve and turned, etc. Only one sleeve would come off. I'm not certain why the sleeves are getting hung-up. Since I've had the pre, which has been a while, I've never changed the tubes.

Hmmm? Am I missing something? In the interim, I will proceed with caution.

Click to expand...

Then take off the lid and see what's going on. Perhaps the sleeve isn't on it's guides. Caution? Yes. These are too nice and too rare.